//  Copyright 2023 Harness, Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package npm

import (
	"encoding/json"
	"fmt"
	"net/http"
	"strconv"

	errors2 "github.com/harness/gitness/errors"
	"github.com/harness/gitness/registry/app/pkg/commons"
	npm2 "github.com/harness/gitness/registry/app/pkg/types/npm"
	"github.com/harness/gitness/registry/request"

	"github.com/rs/zerolog/log"
)

func (h *handler) SearchPackage(w http.ResponseWriter, r *http.Request) {
	ctx := r.Context()
	info, ok := request.ArtifactInfoFrom(ctx).(*npm2.ArtifactInfo)
	if !ok {
		log.Ctx(ctx).Error().Msg("Failed to get npm artifact info from context")
		h.HandleErrors(r.Context(), []error{fmt.Errorf("failed to fetch npm artifact info from context")}, w)
		return
	}

	info.Image = r.FormValue("text")
	limit, err := strconv.Atoi(r.FormValue("size"))
	if err != nil {
		limit = 20
	}
	offset, err := strconv.Atoi(r.FormValue("from"))
	if err != nil {
		offset = 0
	}
	response := h.controller.SearchPackage(ctx, info, limit, offset)

	if !commons.IsEmpty(response.GetError()) {
		if errors2.IsNotFound(response.GetError()) {
			http.Error(w, response.GetError().Error(), http.StatusNotFound)
			return
		}
		http.Error(w, response.GetError().Error(), http.StatusInternalServerError)
		return
	}

	w.Header().Set("Content-Type", "application/json")
	err = json.NewEncoder(w).Encode(response.Artifacts)
	if err != nil {
		http.Error(w, err.Error(), http.StatusInternalServerError)
		return
	}
}
